# I/E Bible vs PLC Ninja

The clearest difference is in-app purchases: I/E Bible at none against PLC Ninja's 6. I/E Bible also leads on device support (3 vs 1) and iOS requirement (15.1 vs 17.6). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. PLC Ninja sells 6 in-app purchases, starting at $3.99 per month. I/E Bible asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for I/E Bible against 5.0 for PLC Ninja. Both are backed by a comparable volume of ratings — 5 and 3 respectively.

## The numbers

| Metric | I/E Bible | PLC Ninja |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (5 ratings)](https://appshunter.io/ios/app/ie-bible/id6761774585/reviews) | [5.0 (3 ratings)](https://appshunter.io/ios/app/plc-ninja/id6805188950/reviews) |
| Number of ratings | **5** | 3 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Monthly |
| Monetization | **Free** | Free with in-app purchases |
| Size | 198 MB | 25 MB |
| Requires iOS | **15.1** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Oscar Corona](https://appshunter.io/developer/1891403709) | [SHAOHUA YI](https://appshunter.io/developer/6805189132) |

## What reviewers say

### I/E Bible

[App page](https://appshunter.io/ios/app/ie-bible/id6761774585)

This app provides a centralized hub for instrument calibration resources. It offers instant answers to process instrumentation questions through an integrated AI agent, streamlining calibration workflows.

**Highlights:** Instrument calibration resources, AI agent for process instrumentation, Instant answers to technical questions, Streamlined calibration workflows, Centralized resource hub

**Features:** macOS Compatibility

**In-app purchases:** none


### PLC Ninja

[App page](https://appshunter.io/ios/app/plc-ninja/id6805188950)

Monitor live data from industrial controllers directly on your iPhone. Safely view inputs, outputs, timers, and analog values in real-time without altering PLC programs. Connect via Ethernet, Wi-Fi, or serial adapters for on-site diagnostics.

**Highlights:** Real-time PLC data monitoring, Read-only safety design, I/O card visualization with notes, Tag, bit, word, and analog value monitoring, Alarm and trend charts for analog values, Drive status monitoring, Multiple connection methods (Ethernet, Wi-Fi, Serial)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Standard | $3.99 | per month |
| Professional | $8.99 | per month |
| Ultimate | $14.99 | per month |
| Standard | $39.99 | per year |
| Professional | $89.99 | per year |
| Ultimate | $149.99 | per year |


## Frequently asked questions

### Is I/E Bible free?

I/E Bible is free to download, with no in-app purchases.

### Is PLC Ninja free?

PLC Ninja is free to download, with in-app purchases available.

### Which has better reviews, I/E Bible or PLC Ninja?

I/E Bible and PLC Ninja are both rated 5.0 out of 5 on the App Store, from 5 and 3 ratings respectively.

### Do I/E Bible or PLC Ninja have ads?

Neither I/E Bible nor PLC Ninja shows ads.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*